Sterilizer



R. L. JEWELL STERILIZER Filed Oct. 27, 1928 Dec. 22, 1931.

VEN TOR.

A TTORNEYS.

Patented Dec. 22, 1931 UNITED s'rATEs :RAYMOND L. JEWELL, 0F MILLGREEK rownsriir,Y EME country, 1i'annsfxrnmiirisi?,/As- 1 'SIGNOR To AMERICAN sannimznn comran, entrain, PnnNsYLvANiagA oon- PORA'IION 0F PENNSYLVANIA l smnnrmznn 1 f l Application mea october 2v, 192ssei-inno. 315,567. J

' `This invention is designed to facilitate the operation of a sterilizer. According to the present invention there is provided a steam ,mi supply, a sterilizer chamber, a iiltered air "'5 inlet, an exhauster in the form of an ejector from the chamber, a `valve mechanism by Vmeans of which. steam may be turned into the ehainber, a Vacuum created in the chamber a throughu the exhauster, and air admitted to `0 the Vchamber after the creation of the vacuurn through the lte'red inlet, means being preferably rovided to connect the chamber directly, Witlh the vatmosphere controlling the manipulation of the contents of the chamber. Features anddetails of the invention `will apesar-from the specification and claims.

preferred embodiment of kthe invention is illustrated in the accompanying drawings as followsz-f f Y i Fig. 1 shows a central section of a portion of the chamber Withthe valve in place therein on the lines 1-1 in Figs. 2 and 3. p Fig. 2 is yan elevationof the valve mechanism.

Fig. 3 a plan view of thevalve disc. Fig. 4 alsection on the line 4-4 in Fig. 3. Fig. 5 a section on the line 5 5 in Fig. 3'.

Fig. 6 a section on the line G-Gin Fig. 3.

1 marks the chamber Wall, 2 the door frame, 3 a surrounding shell, and 4 a steam chamber surrounding the chamber Wall, said steam chamber being connected Withv a source of steam supply (not shown) and forming a. source of supply for the apparatus. 'A inishing shell 5 is arranged outside of the shell 3. These parts are of commonconstruction. A valve tting 6 has a screw-threaded end 7 which vis screwed into a threadedV opening. 8 `in the door frame 2, the inner end of the ntting extending to WithinA the Wall 1 andthe door frame extending between the Wall 1 and shell 3.v A Way 9 is arranged in the ntting and communicates with thechamber Within the Wallr 1 and a way 10 is also arranged in 11 in the door frame, the'passage 11 com 'municating with the chamber 4.

A seat member 12 is arranged aboveV the fitting 6. 'It has-a Way 9a extending through it, the Way 9a connecting with the Way 9 and the ittingand communicates With a passage l a Way 10d extending through it, the Way 10aV connecting With the Way 10. 'A bonnety por-l tion 13 is arranged above ,the seat member 12 and screws 14 extend through-[the bonnet member, the seat member and into tlievtltting 6, assembling the different parts 'of the valve body. An exhaust'passagel leads lfrom the seat member.,v lItis in vthe form vof'a Venturi tube and operates as an? ejector in connection Witlia nozzle 16 Wh nected intlie seat member. z'

The upper face of theseat member forms 'a valve seat 17 and a port 18 extends fromithe valve face, or seat totheexhaust ittingl.

A. port 19 extends from the nozzle` 16 through the seat 17. VTheport 19is' connected by a ra# ich is also'condial port 20c in thevalve 20 vvitlif'tlie central v supply passage 10a so that ywhen ithe valve 1s properly turned steamls delivered through y f o the nozzle and" acts as an ejector.

A valve stein21 is rotatably locked'vvith the valve by means of pins Whichexteiid through a flange at thelo'we'r endoffthe stem and into the valve; VAps-pring 2 3' in `tensioned between the upper falce of the vbonnet section and the flange and yieldinglyholdg the valve to itsseat.V

A handle 24 is secured on a hood 25 andthe hood is mounted on thev stem 21" and locked therewith by a key.. portion 2 6.'` VThe valve,

therefore, may be readily rotated throughthe actionfof the handle. .y I I Y A radial port 27 is arranged in the under face or" the valve and is adapted toconnect the Ways 10a andla seas to turn a supply of steam from the chamber 4 into the's'teri'lizing chamber Within 'the' Wall 1, this positioning 'of the valve being indicated in Fig.

'Af port 28 extends throughY the' valve disc 4andis adapted to'connect the W'ayfQa with il the space Within the bonnet 13, thusV Ypern'lit ting an exhaust of 'steamfromithe sterilizing chamber by Wavof thebonnet space and port l18 tothe exhaust fitting.

This port 28 is connected Withitheway 9a v and is consequently inpositiont'o exhaust the sterilizer chamber vsimultaneously With the' positioning ofthe valve connecting the vvay 9c and consequently the chamber '4With the VnozzleV 16 by Way O'thepdrt 20a` in* the valve and the passage, or way 19 in the seat mem- 1 ber, this positioningroi' the valve being shown in Fig. 1. A radial port extends to a vertical port 31 in the under face of' the valve and to a. verticalport 32'extending through the top :ofthe valve at'the center. Y vThe yport 31 is adapted to be brought into communication with theway 9a and the port 32 is connected with a passage 33 extending .ax- Ylally throughthe stem 21, the. upper face ot-V the valve being provided with a seat 35 into which the lower end of the stem is seated, thus making the connection. A filter cham-V ber 36 is arranged in the upper end of the stem and is provided with a filter filling 37.

Y The filter has a vent 38 in its upper cap providing an inlet from the atmosphere. This position of the valve bringing the port 31 in communication with the way 9a is .illust-ratV e-d'iny 4. The valve is also provided with a vertical port 39 which is adapted tobe vbrought into communication with the way 9a and at this position all otherports are closed except the` port 1.8L wWith the valve'in Y this Aposition thefster-iliz'ingchamber isinr direct `communication with the atmosphere. This position of .the valve is illustrated in y ,the operation of the A sterilizer, latter the chamber is filled withmaterial the valve is swung tothe position shown in Fig. 1 y.de-

livering steamy fromithe chamber 4 tothe ejector Vthereby creating .a partial vacuum in Ving the vacuum the. lsteri-lizfing chamber. The valve is then 'turned to the vposition shown in Fig. 5 deliveringisteam from .the chamber 4 to the ster-V ilizin chamber. At thel completion of the ,sterilizing action the valveis swung to the vposition shown in Fig. 6 connecting the sterilizing chain-ber with the exhaust. When the .pressure in the sterilizing vchamber has 4been exhausted the valve is again swung ,to the position .shown in F ig. 1 vcreating a partial vacuu-m in the. sterilizing chamber. The valve 'i is then brought to the final position shown in 4Y putting the sterilizer chamber in communication with the `filtered air inlet, breakandpermitting the door to be opened.v

What Iv claim Aas new. is 1 1. Ina sterilizer, he combination of a sterilizer chamber; a steam supply connection; an

air inlet filter ;a valve body having ways connected vto .the chamber, a steam supply connection, inlet iil'ter, and an exhaust to the atmosphere, Vsaid ways leading to. ya disc seat; an ejector .operating on said exhaust; and a discshapedvalve head ported with relation to theV ways to connect the sterilizer vchamber with the steam supply connection, the chamber and Y the ,exhaust with ythe steam supply connection connected with vthe nozzle, and the chamber `with the filter.

'2. 'In a sterilizer,the combination of a sterilizer chamber; asteam supply connection; a

'Y valve body connected to the chamber and the valve supply connection, said body having a disc-shaped valve seat; ways in the body exten ding from the chamber through said seat;

a way4 connected with the ,supply connection extending through said seat; iai way corresponding to an ejector nozzle extendlng through said seat; aabonnet member forming a valve chamber from vwhich 4an' exhaust extends in relation to the ejector nozzlegafdiscshaped valve head'rota-tively mounted on the seat; and a filtered inletconnected with the valve head, said valve head being ported in relation to said ways and inlet to connect the chamber with the steam supply connec tion, the chamber with the bonnet chamber and exhaustfthe steam supply connection with the ejectornozzle and y.the lfiltered inlet with the chamber. v l i ,l

In a sterilizer, the combination of a sterivalve body connectedto the chamber'andthe valve Ysupply connection,` vsaid body having a disc-shaped valve-seat; ways in the body extending from the chamber throughflsaid seat; a way connectedwith' the supply connection Vextending through said seat; away ,85 -lizer chamber; a steam supply connection; a

correspondingto an ejectornozzle extending i through said seat; a bonnet member A*forming e i a valvechamber from which an exhaust extends in relation toY the ejector nozzle a ydiscshaped valve head rotatively mounted on the seat; and a filtered inlet .connected with :the y valve head,gsaid valve head being portedwith relation to said waysand inlet to connect vthe A chamber with the. steamsupply. connection, the chamberwith ythe bonnet chamber and ex;-

haust, the steam supplyconnected with the ejectorv nozzle, the filteredV inlet with the chamber, and the chamber with the exhaust.

- 4. In a sterilizer, the combination of a' Yhood connected with the valve and extending over the valve; and ahandle on the hood;

5.'In a sterilizer, the combination Aofxa .sterilizer chamber; alsteam supply connectio'n ;V anair inlety iilter; a valve bodyA having ways connected to the chamber, steam supply connection and yinlet filter; a valve head vported in relationA to the ways to connect the sterilizer chamber and the steam supply connection and the sterilizer chamberand the filter; and a valvegstem for actuating the valve, saidv stem forming a connection between theiilter and the Vfilter connectingway -inthe valve'head. ,a l Y l i a .the combination of a '-sterilizer Chamber; a steam supply connec'- 6. In a sterilizer,

i tion; an air inlet filter; a valve body having Ways connected to the chamber, steam supply connection and al1' inlet filter; a Valve my hand. 1

RAYMOND L. JEWELL. 

